I thought Relativity Space pulled back on their use of 3D printing for the major fuselage parts, saving it more for the engine components, etc., which SpaceX was already doing.
I believe you are correct. Relativity is now only printing engines, just like SpaceX, Rocket Lab, Astra, Firefly, Stoke, and others. They are no longer a company driving forward 3D printing technology and that's too bad.